Articles | Volume 16, issue 11
https://doi.org/10.5194/essd-16-5207-2024
https://doi.org/10.5194/essd-16-5207-2024
Data description paper
 | 
12 Nov 2024
Data description paper |  | 12 Nov 2024

CIrrMap250: annual maps of China's irrigated cropland from 2000 to 2020 developed through multisource data integration

Ling Zhang, Yanhua Xie, Xiufang Zhu, Qimin Ma, and Luca Brocca

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Cited articles

Ambika, A. K., Wardlow, B., and Mishra, V.: Remotely sensed high resolution irrigated area mapping in India for 2000 to 2015, Scientific Data, 3, 160118, https://doi.org/10.1038/sdata.2016.118, 2016. 
Bai, M., Zhou, S., and Tang, T.: A Reconstruction of Irrigated Cropland Extent in China from 2000 to 2019 Using the Synergy of Statistics and Satellite-Based Datasets, Land, 11, 1686, https://doi.org/10.3390/land11101686, 2022. 
Bhattarai, N., Lobell, D. B., Balwinder, S., Fishman, R., Kustas, W. P., Pokhrel, Y., and Jain, M.: Warming temperatures exacerbate groundwater depletion rates in India, Science Advance, 9, eadi1401, https://doi.org/10.1126/sciadv.adi1401, 2023. 
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Chen, F., Zhao, H., Roberts, D., Van de Voorde, T., Batelaan, O., Fan, T., and Xu, W.: Mapping center pivot irrigation systems in global arid regions using instance segmentation and analyzing their spatial relationship with freshwater resources, Remote Sens. Environ., 297, 113760, https://doi.org/10.1016/j.rse.2023.113760, 2023. 
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This study presented new annual maps of irrigated cropland in China from 2000 to 2020 (CIrrMap250). These maps were developed by integrating remote sensing data, irrigation statistics and surveys, and an irrigation suitability map. CIrrMap250 achieved high accuracy and outperformed currently available products. The new irrigation maps revealed a clear expansion of China’s irrigation area, with the majority (61%) occurring in the water-unsustainable regions facing severe to extreme water stress.
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